Stereoscopic projection device comprising a 3D light valve rotationally installed on a light-emitting side of a lens assembly

Abstract

A stereoscopic projection device is provided, including a projector including includes a lens assembly for emitting partially polarized light and polarization stereoscopic conversion equipment including a 3D light valve which is rotationally installed to a light-emitting side of the lens assembly and is parallel to the lens assembly, such that the partially polarized light passes through the 3D light valve to be converted into left hand circularly polarized light and right hand circularly polarized light. When the partially polarized light is subjected to light spot offset, the 3D light valve is rotationally regulated according to polarization characteristics of the partially polarized light and rotational symmetry of the light valve and has the same effect on the light polarization before and after being rotated, the 3D light valve is enabled to cover the current light spot range formed at the 3D light valve by the light emitted from the lens assembly.

Dependencies are inferred from the claim text.